//移除css或js
function removejscssfile(filename, filetype){
	 var targetelement=(filetype=="js")? "script" : (filetype=="css")? "link" : "none"; //determine element type to create nodelist from
	 var targetattr=(filetype=="js")? "src" : (filetype=="css")? "href" : "none"; //determine corresponding attribute to test for
	 var allsuspects=document.getElementsByTagName(targetelement);
	 for (var i=allsuspects.length; i>=0; i--){ //search backwards within nodelist for matching elements to remove
	 	if (allsuspects[i] && allsuspects[i].getAttribute(targetattr)!=null && allsuspects[i].getAttribute(targetattr).indexOf(filename)!=-1)
	   		allsuspects[i].parentNode.removeChild(allsuspects[i]); //remove element by calling parentNode.removeChild()
	 }
}
